package com.qf.filter;

import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import java.io.IOException;

/**
 * @Author:YuhuaZhang
 * @Description
 * @Date:Created in 20:42 2021/11/3
 * @Modified By:
 */
@WebFilter(urlPatterns = "/*")
public class EncodingFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        //1.设置编码格式（请求和响应）
        servletRequest.setCharacterEncoding("utf-8");
        servletResponse.setContentType("text/html; charset=UTF-8");
        //2.放行
        filterChain.doFilter(servletRequest,servletResponse);
    }

    @Override
    public void destroy() {

    }
}
